Order Cancel Messages - Paxos Documentation

Order Cancel Request

Submit cancel requests with MsgType (35) set to F. Orders can be canceled at any point by referencing the ClOrdID (11) used when submitting the order. See Execution Report - Canceled for the cancel confirmation response.

Message Format – Outgoing Message

Standard FIX Fields

Tag	Field	When to Include	Notes
`8`	BeginString	Always	Standard FIX header
`9`	BodyLength	Always	Standard FIX header
`35`	MsgType	Always	`F` (Order Cancel Request)
`49`	SenderCompID	Always	Standard FIX header
`56`	TargetCompID	Always	Standard FIX header
`34`	MsgSeqNum	Always	Standard FIX header
`52`	SendingTime	Always	Standard FIX header

Standard FIX Trailer

Tag	Field	When to Include	Notes
`10`	CheckSum	Always

Cancel Request Fields

Required

Tag	Field	When to Include	Notes
`41`	OrigClOrdID	Always	ClOrdID of the original order to cancel
`11`	ClOrdID	Always	New client order ID for this cancel request (a-z, A-Z, 0-9, `.`, `-`, `_`, `$`, `:`)
`1`	Account	Always
`109`	ClientID	Always
`55`	Symbol	Always	Currency pair
`167`	SecurityType	Always	Must be `FOR`
`54`	Side	Always	`1` = Buy, `2` = Sell
`60`	TransactTime	Always

Conditional

Tag	Field	When to Include	Notes
`38`	OrderQty	Limit and market sell orders	Base quantity
`152`	CashOrderQty	Market buy orders	Fiat notional

Order Cancel Reject

If a cancel request cannot be processed, Paxos returns an Order Cancel Reject with MsgType (35) set to 9 and CxlRejReason (102) populated.

Message Format – Response Message

Standard FIX Fields

Tag	Field	When Present	Notes
`8`	BeginString	Always	Standard FIX header
`9`	BodyLength	Always	Standard FIX header
`35`	MsgType	Always	`9` (Order Cancel Reject)
`49`	SenderCompID	Always	Standard FIX header
`56`	TargetCompID	Always	Standard FIX header
`34`	MsgSeqNum	Always	Standard FIX header
`52`	SendingTime	Always	Standard FIX header

Standard FIX Trailer

Tag	Field	When Present	Notes
`10`	CheckSum	Always

Cancel Reject Fields

Always Present

Tag	Field	When Present	Notes
`434`	CxlRejResponseTo	Always	`1` = Order Cancel Request
`11`	ClOrdID	Always	ClOrdID from the cancel request
`39`	OrdStatus	Always	Current order status
`41`	OrigClOrdID	Always	Original order ClOrdID
`37`	OrderID	Always
`1`	Account	Always
`102`	CxlRejReason	Always	See rejection reasons below

Rejection Reasons – CxlRejReason (`102`)

Value	Meaning	When
`0`	Too late to cancel	Order is already filled, cancelled, or rejected
`1`	Unknown order	Order not found or invalid client order identifier
`2`	Broker option	General rejection (e.g., too early to cancel, invalid wallet)
`3`	Already pending cancel	A cancel request is already being processed for this order
`99`	Other	Market is unavailable

​Order Cancel Request

​Message Format – Outgoing Message

​Standard FIX Fields

​Standard FIX Trailer

​Cancel Request Fields

​Order Cancel Reject

​Message Format – Response Message

​Standard FIX Fields

​Standard FIX Trailer

​Cancel Reject Fields

​Rejection Reasons – CxlRejReason (102)

Order Cancel Request

Message Format – Outgoing Message

Standard FIX Fields

Standard FIX Trailer

Cancel Request Fields

Order Cancel Reject

Message Format – Response Message

Standard FIX Fields

Standard FIX Trailer

Cancel Reject Fields

Rejection Reasons – CxlRejReason (`102`)